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Chevy Express/GMC Savana Starting/Stalling Problems

105 messages,  Last post on Feb 26, 2013 at 11:21 PM

You are in the Chevy Express & GMC Savana Forum.

What is this discussion about? Chevrolet Express, GMC Savana, GMC Savana Cargo, Van

Messages Page 9 of 11

#75 of 105 fuel injector problems by ifine

Jan 27, 2011 (11:05 pm)

Has anyone had fuel injector problems on Chev Express 5.7 o and I have a 99 that is running rough, mechanic says I need to replace the injector and they are part of the manifold and come as a set. Does any of that make sense. Would appreciate advise and help. Thanks

#76 of 105 2000 chevy express wont stay running by charliegray

Feb 16, 2011 (10:01 pm)

i have a 2000 chevy express 3500 with a 5.7liter i get it to start and starts fine but after about 10 mins it dies and wont restart when i try to restart it makes a loud clanking noise while turning over iv went throw 3 starters with this problm. so i thought it was the fuel pump or fuel filter so i replaced both and am still haveing the same problm anyone have any ideas what could b going wrong this is my work truck so i need it on the road

#77 of 105 Re: 2000 chevy express wont stay running [charliegray] by van3500

Feb 17, 2011 (7:57 am)

Replying to: charliegray (Feb 16, 2011 10:01 pm)
I would investigate the loud clanking noise while cranking over. Three starters , probably in a short period of time needs attention.
 
Does the engine make the clanking sound every time you start it or try to start it? Does the engine spit and sputter when shutting off or just act like the key was turned off?
 
You can buy a manual for the van and it may help. You can monitor the fuel pressure while the engine is running and see if it drops off. An OBDII tester may give you some codes if there are engine problems. There is a crank position sensor that could be going bad, or the timing module in the distributor could be failing. When the engine shuts off do the idiot lights on the dash come on, when the engine does not want to start again are there any idiot lights on on the dash? Could be control module problems, loose wire or bad ground...
 
Good luck!

#78 of 105 Re: 2000 chevy express wont stay running [van3500] by charliegray

Feb 17, 2011 (1:01 pm)

Replying to: van3500 (Feb 17, 2011 7:57 am)
when i can get it to start it starts fine but after about 10-15 mins it sputters out no warning lights r on while running but a check engine light comes on after it dies and when i try to restart is when it makes the loud clanking noise like the engine wants to cease if i let it sit for a long period of time it will start for those 10-15 mins

#79 of 105 Re: 2000 chevy express wont stay running [charliegray] by van3500

Feb 18, 2011 (8:08 am)

Replying to: charliegray (Feb 17, 2011 1:01 pm)
If you have access to an OBDII tester it will give you the code that was displayed when the engine shut down. It may be helpful in determining what is happening. You can buy a fairly inexpensive code reader for under $100.00. It may only give you the code or codes as alpha numeric, then you will need a manual of web site to decipher the codes. This should point you in the right direction or at least help.
 
I use an AUTOTAP code reader with expanded information specific to the Fords, Chevy's and Chrysler products. (www.autotap.com) It is expensive but it has helped me with several cars.

#80 of 105 Re: 2000 chevy express wont stay running [van3500] by skibsky

Feb 28, 2011 (4:32 pm)

Replying to: van3500 (Feb 18, 2011 8:08 am)
HI FOLKS... I BEEN INTERESTED IN .THIS CONVERSATION .......ABOUT THE VANS I AM LOOKING TO BUY THIS 2002 EXPRESS VAN LOCALLY... AND IT HAD A SORT HISTORY OF SIMILAR PROBLEMS.... THE GUY WHO OWN THE VAN NOW SEZ ..... HE CHANGE THE .....CAP AND ROTOR AND IT RUNS FINE NOW....
 
I AM A PROFESSIONAL MECHANIC ( REFRIGERATION) JUST SAYING
 
AND I DONT SEE ANY WHERE YOU GUYS ACTUALLY FOUND THE SMOKING GUN.... BECAUSE I HEARD THIS PROBLEM... IS SO INTERMIITTING... THAT IT CAN COME AND GO LONG PERIODS OF TIME... AND WHAT WAS THOUGHT AS A CORRECTIVE MESSURE MAY NOT BE.... ANY WAY DID ANY ONE EVER CONTACT THE NATIONAL SERVICE MANAGERS AT THE FACTORY?????
 
IS THERE A FACTORY SERVICE BULLETIN ABOUT THIS PROBLEM ??
 
OR DID ANY OF YOU GUYS FEEL YOU GOT TO THE BOTTOM OF THIS PROBLEM .. BECAUSE I DONT SEE THAT IN THE COMMENTS?
 
PLEASE HELP!!! I REALLY WANT TO BUY THIS 2002 EXPRESS BUT NOW I AM HESITANT ... AND I WOULD GREATLY APRECIATE SOME HELP

#81 of 105 CHEVY EXPRESS by skibsky

Feb 28, 2011 (4:34 pm)

HI FOLKS... I BEEN INTERESTED IN .THIS CONVERSATION .......ABOUT THE VANS I AM LOOKING TO BUY THIS 2002 EXPRESS VAN LOCALLY... AND IT HAD A SORT HISTORY OF SIMILAR PROBLEMS.... THE GUY WHO OWN THE VAN NOW SEZ ..... HE CHANGE THE .....CAP AND ROTOR AND IT RUNS FINE NOW....
 
I AM A PROFESSIONAL MECHANIC ( REFRIGERATION) JUST SAYING
 
AND I DONT SEE ANY WHERE YOU GUYS ACTUALLY FOUND THE SMOKING GUN.... BECAUSE I HEARD THIS PROBLEM... IS SO INTERMIITTING... THAT IT CAN COME AND GO LONG PERIODS OF TIME... AND WHAT WAS THOUGHT AS A CORRECTIVE MESSURE MAY NOT BE.... ANY WAY DID ANY ONE EVER CONTACT THE NATIONAL SERVICE MANAGERS AT THE FACTORY?????
 
IS THERE A FACTORY SERVICE BULLETIN ABOUT THIS PROBLEM ??
 
OR DID ANY OF YOU GUYS FEEL YOU GOT TO THE BOTTOM OF THIS PROBLEM .. BECAUSE I DONT SEE THAT IN THE COMMENTS?
 
PLEASE HELP!!! I REALLY WANT TO BUY THIS 2002 EXPRESS BUT NOW I AM HESITANT ... AND I WOULD GREATLY APRECIATE SOME HELP

#82 of 105 Re: CHEVY EXPRESS [skibsky] by magna82

Apr 08, 2011 (7:45 pm)

Replying to: skibsky (Feb 28, 2011 4:34 pm)
I, too, have been interested in this thread. I will be working on a 2000 GMC for a friend with this same problem. He has wasted $1K on failed fixes. I have 40 years experience in electronics and rebuild wrecked or flooded vehicles as a hobby. I find one notable response on this forum referring to a loose ground at the thermostat housing. I also would like to share that alldatadiy.com has online manuals and service bulletins for a very reasonable subscription. I found there is a service bulletin released in 2003 that is in regard to corrosion problems with the VCM under the hood near the relay center on the left side of the vehicle. There is a revised splash shield to help prevent further damage. I find it interesting that I did not hear mention of this from any of the posts that took there van to a dealer. I only happened on this site, tonight in researching the issue to help my friend, this weekend. I will try to post my findings here when I get his fixed.

#83 of 105 Results of my tests on 2000 GMC by magna82

Apr 09, 2011 (7:04 pm)

With the engine housing removed, I held a neon tester against one of the spark plug wires while cranking the engine. The neon flashed so I knew I had ignition. I took the cap off of the schraeder valve on the fuel line feeding the injectors and carefully pressing the center pin to check for any pressure (should be about 50 psi), there was none. I took off the air cleaner and removed the mass air flow sensor. I then poured about 2 ounces of fuel in the duct leading to the throttle body. I then cranked the engine, which started and ran until the fuel was all gone, about 10-15 seconds. I then verified that there was 12 volts at the fuel pump relay and after replacing the relay, I verified that the relay clicked when the key was turned on. I then crawled under the van and split connector C301 at the front of the fuel tank and checked for voltage and ground. I found the ground pin in position "A" had become hot and melted the plastic. I knew that there had been a poor connection which raised the resistance of the connection causing it to heat under load. I took apart the pins and cleaned and soldered each one. The ground pin on the mating half of the connector was blackened as well. Cleaned everything up and put it back together. The pump runs fine, now. I am ordering a new connector body(12110751) to replace the melted section.

#84 of 105 Re: CHEVY EXPRESS [skibsky] by bigredbox01

Apr 21, 2011 (9:24 am)

Replying to: skibsky (Feb 28, 2011 4:34 pm)
My starting problems starting the van happened about 3 months into the
rainy season and my '01 5.7 was 2 years old and still under warranty. The mechanic said it was moisture under the distributer cap and that I needed to drive it more. It happened again about a year later this time I looked at it myself and found copious amounts of moisture and corrosion. A new cap and rotor fixed the problem temporarily. The design and configuration is very susceptible to steam building in the small engine compartment and entering the vents in the bottom of the distributer and not escaping then the firing storm in the confined space corrodes and carbon tracks the components to premature failure. GM sent a tsb recommending removing the vent screens (not a good idea since it allows more moisture in.). I believe I have solved my problem by fabricating a vent fixed into the top (heat rises GM!) of the cap. I cut the vent from another model cap, drilled a hole in my cap and secured the vent with epoxy. So far so good! My last cap and rotor tracked so bad that it burned a hole through the rotor an stopped running while driving down the road. A new cap and rotor every 18-24 months will work I just got tired of the work and expense. I have gone through 4 or 5 sets before I put the vent in the top. Good luck.
 
Cheers

Messages Page 9 of 11

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